Residual Stresses Induced by Elastoplastic Unloading in a Tube Made of Dispersion-Hardened Alloy

被引：7

作者：

Matvienko, O. V. ^{[1
,2
]}

Daneyko, O. I. ^{[1
]}

Kovalevskaya, T. A. ^{[1
]}

机构：

[1] Tomsk State Univ Architecture & Bldg, Tomsk, Russia

[2] Natl Res Tomsk State Univ, Tomsk, Russia

来源：

RUSSIAN PHYSICS JOURNAL | 2018年 / 61卷 / 04期

关键词：

dispersion-hardened material; nanoparticle; plastic deformation; mathematical model; strain hardening; unloading; residual stress; DISLOCATION-STRUCTURE; PARTICLES; PIPE;

D O I：

10.1007/s11182-018-1454-y

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The paper carries out research into elastoplastic unloading using methods of plasticity theory and solid mechanics. Residual stresses are measured in a heavy-walled tube made from a dispersion-hardened copper alloy. It is shown that residual radial stresses are insignificant after the unloading and do not exceed 0.5 MPa. When the ultimate plastic strength is achieved, the amount of residual tangential and axial stresses is almost 17% of the ultimate shear stress.

引用

页码：730 / 742

页数：13

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